Ore-grinding mill.



)Pi A. MACEACHERN N. ODANIEL.

GRE GRINDING MILL.

APPLICATION FILED auG.x2i 191s.

1 ,233,086. Patented Jui-y 10, 1917.

2 SHEETS-SHEET l.

l PO

P. A, MACEACHERN 6a Nl ODANIEL.

` OBE GHINDING MILL,

` APPLICATIUN FILEU AUG. B2. |916. '4 1,233,086. Patented Ju1y10,1917.

fil-:Mummy UNTTED STATES PATENT oEEIoE.

P ETEB. A. MAGEACHEBN AND NOLEN ODANIEL, GF DOUGLAS, ARIZOENA.

ORE-GRINDING MILL.

To all 'u1/wm ui my concern Be it known that' we,V PETER A.' 1 VIAo- -Eaciiram and NOLEN 'UD-mma, citizens" wherein a fix'ed and a rotatable ii'emb'er'- are provided` the saidlfixed -nienbe'r beingA circular andai-ranged coaxially, and the rotatable member being mounted to rotate with respect to the fixed member, the said members having registering circular ruri ways or rotaries in which 'are mounted 'series of balls;andwheijein'a launder. encircles the seetioiis. being secured to the fixed nfember for receiving the ground material,

and wherein the members` the hiunder, and

the. runwaysare sectional and`detachably eonneetedfto permit detachment, and re- Tn the draii'ingsi Figure 1 is"a side view ofthe improved mill;

F ig. 2 is a transverse vertical section;

li`ig, 3 is a top plan. view with parts broken away: and

Fig. 4V is an enlarged section through the 4rotaries 'and griiidingballs.

The present embodiment 'of the invention comprises a base. and a top or cover of similar construction. the taper cover being arranged to rotate with respect to the base to griiidfthe ore.' The. base is sectional, consisting of foiirsiinilar sections which are' secured together to form a circular structure having a central hub. i

Each ofthe sections l has radial ribs 2 and 2, the. ribs 2 heilig at the straight sides of the sections. while the ribs 2* areI in* terniediate the said sides. The ribs 2 of the sections abut and are secured together by bolts and nuts 3 to hold the sections into the circular structure` and all of the ribs 2 aiul "2. are supporting ribs for the base.. It will be noticed from an inspection of Fig. 2. that 4the. structure as a whole has a slightly conical top being highest at the. hub 41l and gradually inclined oidwardly toward the. periphery. 'l`lie top or cover is also composed ol' sections 5 ol' quadrautal forni having radial ribs (3 at their straight Specincatlon of Letters Patent.

Patented Juiy 1o, 1917.

Application ined August i2, 1916. serial no. 114.634.

sides, and ribs 6* intermediate the ribs 6. The ribs 6 abut and are secured together' by bolts and .nuts 7 to form a complete structure. The top or cover has a central hub 8 which is coaxial with the hub 4. When the 'base and cover are in'proper pofsition, the ribs 6 and 6 do notl extend to the hub as do the ribs' and 2 ofthe base,` being: approximately' halfway. romj the .pe-`

riphery tothe hub.. A'n opstanding circuf larV fiange 9- yis provided integrally with the sections, andlalso sectionaL, the 'Said flange forming apulley for engagement by `the beltv 10 to rotate the top or cover with respect to the base. This fiamge is braced externally by thefribs 6 and Gand interiorly by braei-n'g'ribs'll which are' of approximi'itely the same depth at the flange as .the flange, but decrease in depth toward the luik-and' bolts and nutsl are provided for connecting the abut-ting l'ibsll.

Y -'l`headj'acent.faces'of the top\ o'rlcover and base have are-shaped ribs 14, which are so arranged witlirespect to the sections that when the sections are bolted together, the

ribs will form continuous circular ribs parallel with each other and with the ribs of the top or cover registering with the ribs of p the b ase` Tracks or runways 15 are supported by the ribs of the top or '.eover and the bese, each of said tracks or runways bein provided at its opposite side edges' wit out wardly extending flanges 16 which rest upon the ribs 14, while the bodies of the tracks or runways rest upon' the Abody of the'base, and the said bodies at the' cover are connected with the cover in the manner seen in Fig. 4. Bolts`17 are passed through the'bodies of the tracks or runways ofthe top'or cover,

and through rcgisteringopenings in the topl or cover, and are engaged by nuts above the .A

top or cover to hold the runways in place.

Tt will be noticed from a'n inspection of Fig. 4 that the openingsfor the bolts in the runways are roamed or eoiintei-bnred, to receive the heads of the bolts, and these bolts are. arranged between the ribs 6 'and -6 in limes radia|-wit-h respect to the top or cover. The, runways of the top or cover register 'with the. runways of the base, and within cai-li of said runways is arranged series of hardened steel ballslS, the said balls fitting `the runways; that is, tlieciuve of the run\ ways corresponds to the curve` of the periphery ot the hails. The balls of each runuuy ure in vuulzu-l und in the present inslunle lire -@ries :1ro provided.

'l`lu ore living ground, is fed inlo the hub S ol' lluiop or eurer, hy liu-uns 'ol' :L feeding luundm' ISL und u rover or slop plate 2() rovers ihn upper und ol the huh l: heilig Scnn-d lo llw said hull I n' screws, :is shown.

lfl

l llw luw- :nul llulullin4 4 und Sure similarly hpnl-ml so lhzxi Ille nlulvriul fed through the luumlcr IH will lw-delhrlvd hy the plate into lluruu\\':r\' or roluries. 'l'his material will luground lwlu'evn (he hullA and the runund \\ill work. ils \\'u out toward the pvriplwr'r'o'l the mill. l

ln pmu-lire there will he :n I'all ol :i quarlvrof :in inrh to lhe'loot from (h e center 'u inlu'lutol the rirrnluference. The luunder vnrirvhm lluI mill for receiving the ground -iuulvriul :nul llu luid luundfr is composed of l|l-lion. 2l whirh hure depending ril-is 215 :il llwir ends. the rllnsuliixlllng und living sewurm-l together in :l miler-light manner.

'l'hu-inlur alla ol' liw scf-lions are -holted to ilu-inner unil ol'ul lrough. und the mulerinl "ruiwl inclini-'gvd diri-vll)l lnlo lluluunder.

1,233 ,ese

The steel lmlls'and the rotaries which are also of hardened steel, form the grinding faces of the machine, and 'sinceeach rotary or circular runway is sectional, und since any section may he detached, the parts may he readily replaced or renewed, should they heeome worn or broken. i

In operation -the ore which the proper size, depending upon the size of he mill, is fed into 'the hub 8. As thelop rotates, the material will ess. out toward the periphery, und-will he hnely ground lie-- t;ween the. halls of .the runways, finally reaehing'the launder at the proper mesh;

\Ve claim In a mill of the characterSpecifieduuii i lis reduced to' Aprsing complementary members, each hau-f ,V ingr rndla'l'rilxs on its outer 'face vund parallel? (circular` ribs-on its inner face, the eireulzu--v v ed lwtwieli lhe. circularA haringoulel 

